[2] Jordan was also a professor of zoology, with six species of heteroptera named after him.
His initial career as a scientist at the experimental station for fruit and wine research, Neustadt/Haardt, was cut short by the First World War, after which he taught in the faculty of biology and chemistry at the Oberrealschule in Bautzen.
After the Second World War, he led the entomological section of the Deutsche Kuturbund.
He is particularly known for his work on the Heteroptera but published widely on the insects of Saxony and Upper Lusatia (Oberlausitz).
This biographical article related to German artistic gymnastics is a stub.